CWK High Performance Battery for Dell Latitude E4200 for Part #'s 312-0864 451-10644 F586J R640C W346C X784C Y084C Laptop Notebook Computer PC (6cell 11.1V 5200mAh) 24 Months Warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 14.8 Volt (14.4 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!